Fireproof coating

Abstract

The invention belongs to the technical field of fireproof coating, and relates to a fireproof coating composed of the following raw materials in parts by weight: 40-50 parts of expanded perlite, 40-50 parts of expanded vermiculite, 80-100 parts of portland cement, 2-5 parts of hydroxymethyl cellulose, 8-12 parts of glass fibers, and 80-100 parts of water. During preparation, firstly, the expanded perlite, expanded vermiculite, portland cement, hydroxymethyl cellulose and glass fibers are crushed and mixed uniformly according to the proportion, then water is added, and the mixture is stirred evenly to obtain the product. The coating has the advantages of scientific formula, high finished product adhesion, no toxicity, no flue gas or other pollution, good water resistance, low cost, excellent weatherability, and convenient construction, overcomes the shortcomings of poor weatherability of thin type and ultrathin type organic fireproof coatings, can be mechanically sprayed, and has good popularization value.

Description

technical field [0001] The invention belongs to the technical field of fireproof paint, in particular to a fireproof paint, which is especially suitable for spraying on the surface of tunnels, has convenient construction, and has good popularization and application value. Background technique [0002] In recent years, the development of high-speed rail in my country has been very rapid. Along with the construction of high-speed rail, it has also blossomed all over the country. Then there are many high-speed rails that need to pass through mountains and tunnels, so the fire prevention measures in tunnels are particularly important. Importantly, most of the existing tunnel fire protection layers are sprayed with organic flame retardant coatings. The problem is that the coating is relatively thin. Although it has a certain flame retardant effect, it is easy to generate harmful substances when encountering high temperatures. Once the high-speed rail is in the tunnel In the event o...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of fireproof coating for the problem that the current fireproof coating in the train tunnel generally adopts organic coating, which is easy to produce toxic gas when encountering high temperature and is expensive.